$ python3 confusion.py --api=genderguesser --csv=files/names/allnoundefined.csv 
A confusion matrix C is such that Ci,j is equal to the number of observations known to be in group i but predicted to be in group j.
If the classifier is nice, the diagonal is high because there are true positives
Gender Guesser confusion matrix:

[[ 1519, 55, 394]
 [ 67, 2955, 788]]

